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Table 1
<br /> Groundwater Elevation and Analytical Data
<br /> ARCO Service Station No, 548
<br /> 1612 W. Hammer Lane, Stockton, CA
<br /> TOC Depth to Water Level Ethyl- Total
<br /> Well Date PI Elevation Water Elevation TPHg TPHd Benzene Toluene benzene Xylenes MtBE DO
<br /> Number Sampled NP (feet msl) (feet bgs) (feet msl) MIL) (pg/L) ({rg/L) (Pg/L) (pg/L) (P91L) (Irg/L) (mg/L) Comments
<br /> MW-2 03/30/2005 P 9.82 28.46 -18.64 <50 <0.50 <0.50 <0.50 <0.50 0.60[2] 9.1 Water Level data
<br /> collected 3/29/05
<br /> 06/16/2005 P 9.82 27.91 -18.09 6,400 -- 66 <5.0 270 510 <5.0[2] 2.67
<br /> 09/09/2005 P 9.82 30.14 -20.32 1 <50 - <0.50 <0.50 <t1.50 <0.50 <0.50[2] 5.14
<br /> MW-3 2/15/1995 9.95 40.69 -30.74 **84 <0.5 <0.5 <0.5 <0.5 NA -- No FP,No S,No O,[62]
<br /> 5/12/1995 -- 9.95 38.80 -28.85 **100 <0.5 <0.5 <0.5 <0.5 NA - No FP,No S,No O,[62]
<br /> 8/29/1995 9.95 40.27 -30.32 *<170 <0.5 <0.5 <0.5 <0.5 NA - No FP,No S,No O,[62]
<br /> 12/4/1995 -- 9.95 39.06 -29.11 *<150 <0.5 <0.5 <0.5 <0.5 NA No FP,No S,No O,[62]
<br /> 2/2/1996 9.95 37.10 -27.15 *<100 -- <0.5 <0.5 <0.5 <0.5 NA No FP,No S,No O
<br /> 5/10/1996 9.95 34.53 -24.58 *'<100 <0.5 <0.5 <0.5 <0.5 <3 No FP,No S,No O,[62]
<br /> 8/29/1996 9.95 36.21 -26.26 **<90 <0.5 <0.5 <0.5 <0.5 *<4 No FP,No S,No O,[62]
<br /> 11/20/1996 9.95 35.31 -25.36 **<90 -- <0.5 <0.5 <0.5 <0.5 <3 No FP,No S,No O,[62]
<br /> 3/19/1997 9.95 31.54 -21.59 **<80 - <0.5 <0.5 <0.5 <0.5 <3 No FP,No S,No O,[62]
<br /> 5/27/1997 9.95 31.16 -21.21 **<70 <0.5 <0.5 <0.5 <0.5 <3 No FP,No S,No O
<br /> 8/12/1997 9.95 33.14 -23.19 <50 <0.5 <0.5 <0.5 <0.5 <5 No FP,No S,NO O,[62]
<br /> 11/18/1997 9.95 32.95 -23.00 <50 - 1.5 0.87 <0.5 0.68 <5 No FP,No S,No O,[62]
<br /> 2/16/1998 - 9.95 29.05 -19.10 140 - 0.5 0.71 <0.5 <0.5 <5 No FP,No S,No O,[63]
<br /> 6/23/1998 P 9.95 26.94 -16.99 <50 -- <0.5 <0.5 <0.5 <0.5 <5 No FP,No S,No O,[62]
<br /> 9/29/1998 P 9.95 28.72 -18.77 <50 - <0.5 <0.5 <0.5 <0.5 <5 - No FP,No S,No O,[62]
<br /> 12/30/1998 P 9.95 26.56 -16.61 <50 - <0.5 <0.5 <0.5 <0.5 <5 No FP,No S,No O,[62]
<br /> 3/31/1999 P 9.95 25.09 -15.14 <50 -- <0.5 <0.5 <0.5 <0.5 17 No FP,No S,No O,[62]
<br /> 6/28/1999 P 9.95 26.25 -16.30 <50 - <0.5 <0.5 <0.5 <0.5 23.6 No FP,No S,No O, [62]
<br /> 9/10/1999 P 9.95 28.28 -18.33 <50 -- <0.5 <0.5 <0.5 <0.5 27.7 -- No FP,No S,No O, [621
<br /> 12/13/1999 P 9.95 27.35 -17.40 <50 -- <0.5 <0.5 <0.5 <0.5 <2.5 - No FP,No S,No O, [62]
<br /> 3/28/2000 P 9.95 24.13 -14.18 <50 - <0.5 <0.5 <0.5 <0.5 18 - No FP,No S,No O, [62]
<br /> 6/26/2000 P 9.95 25.14 -15.19 <50 -- <0.5 <0.5 <0.5 <0.5 6.3[2] -- No FP,No S,No O, [63]
<br /> 9/28/2000 P 9.95 27.67 -17.72 <50 -- <0.5 <0.5 <0.5 <0.5 107 - No FP,No S,No O
<br /> 12/18/2000 P 9.95 26.37 -16.42 <50 -- <0.5 <0.5 <0.5 <0-5 <2[2] No FP,No S,No O
<br /> 3/14/2001 P 9.95 24.92 -14.97 <50 -- <0.5 <0.5 <0.5 <0.5 <1.0 -- No FP,No S,No O
<br /> 6/19/2001 P 9.95 25.91 -15.96 <50 -- <0.5 <0.5 <0.5 4.5 <2[2] - No FP,No S,No O
<br /> 9/11/2001 P 9.95 28.41 -18.46 <50 - <0.5 <0.5 <0.5 <0.5 <2[2] No FP,No S,No O
<br /> 12/13/2001 P 9.95 27.77 -17.82 <50 -- <0.50 <0.50 <0.50 <0.50 <0.50[2] - No FP,No S,No O
<br /> 3/12/2002 1 P 1 9.95 25.94 -15.99 <50 -- <0.50 <0.50 <0.50 <0.50 <0.50[2] No FP,No S,No O
<br /> Report Date:November 17,2005 Page 4 of 17
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